where we introduce the four formal functions \(\rho _{PB^\prime }(p^{\prime 2},p^2,t)\) , \( \rho _{PM^\prime }(p^{\prime 2},t,q^2)\) ,
\( \rho _{P^{\prime }M}(t^\prime ,p^2,q^2)\)  and \(\rho _{P^{\prime }B}(t^\prime ,p^2,q^2)\)  to
parameterize the complex couplings or transitions between the ground states and the higher resonances or the continuum states.
In Ref.[1]}, the \(P_c(4380)\)  is assigned to be a pentaquark molecular state, its two-body strong decays are studied with the QCD sum rules, where the second term, the third term and the fourth term in Eq.(REF ) are all neglected.
In Refs.[2]}, [3]}, the \(P_c(4312)\)  is assigned to be a pentaquark molecular state, its two-body strong decays are studied with the QCD sum rules, all the terms in Eq.(REF ) are taken into account, just as what was suggested in Ref.[2]}.
In Refs.[5]}, [6]}, the \(\Theta ^+(1540)\)  is assigned to be a pentaquark state, its two-body strong decays are studied with the QCD sum rules, where the second term, the third term or the fourth term are neglected in one way or the other. We should take into account all the four terms in Eq.(REF ) so as to describe the transitions between the ground states and the first radial excites in order to make the calculation robust.
